csrc/node-v0.10.24/test/simple/test-next-tick-starvation.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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var common = require('../common');
var assert = require('assert');


var ran = false;
var stop = false;
var start = +new Date();

function spin() {
  var now = +new Date();
  if (now - start > 100) {
    throw new Error('The timer is starving');
  }

  if (!stop) {
    ran = true;
    process.nextTick(spin);
  }
}

function onTimeout() {
  stop = true;
}

spin();
setTimeout(onTimeout, 50);

process.on('exit', function() {
  assert.ok(ran);
  assert.ok(stop);
});